package com.itheima.controller;

import com.itheima.pojo.Result;
import com.itheima.pojo.User;
import com.itheima.service.UserService;
import com.itheima.utils.JwtUtil;
import com.itheima.utils.Md5Util;
import com.itheima.utils.ThreadLocalUtil;
import jakarta.validation.constraints.Pattern;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@RestController
@RequestMapping("/user")
@Validated
public class UserController {
    @Autowired
    private UserService userService;
    @Autowired
    private StringRedisTemplate stringRedisTemplate;
    @PostMapping("/register")
    public Result register(@Pattern(regexp = "^\\S{5,16}") String username,@Pattern(regexp = "^\\S{5,16}") String password){
        // 查询用户
        User u = userService.findByUserName(username);
                if(u == null){
// 用户名没有没占用，进行注册
                    userService.register(username,password);
                    return Result.success();
                }else{
                    return Result.error("用户名已存在");
                }

    }

     @PostMapping("/login")
        public Result <String> login(@Pattern(regexp = "^\\S{5,16}") String username,@Pattern(regexp = "^\\S{5,16}") String password){
        // 根据用户名查询用户
        User loginUser = userService.findByUserName(username);
        // 判断用户是否存在
        if(loginUser == null){
            return Result.error("用户名错误");
        }

        if(Md5Util.getMD5String(password).equals(loginUser.getPassword())){
            // 登陆成功
            Map<String,Object> claims = new HashMap<>();
            claims.put("id",loginUser.getId());
            claims.put("username",loginUser.getUsername());
            String token = JwtUtil.genToken(claims);


            // 吧token存到redis中
            ValueOperations<String,String> operations = stringRedisTemplate.opsForValue();
            operations.set(token,token,1, TimeUnit.HOURS);

            return Result.success(token);
        }
         return Result.error("密码错误");


        }

        @GetMapping("userInfo")
        public Result<User>userInfo(){
            Map<String,Object> map = ThreadLocalUtil.get();
            String username = (String) map.get("username");
            User user = userService.findByUserName(username);
            return Result.success(user);
        }

        @PutMapping("/update")
        // @Validated 此注解作用:生效实体类中的校验注解
    public Result update(@RequestBody @Validated User user){
        userService.update(user);
        return Result.success();
        }

        @PatchMapping("/updateAvatar")
        // @Url 此注解作用:值必须为合法的url地址
        public Result updateAvatar(@RequestParam @URL String avatarUrl){

        userService.updaateAvatar(avatarUrl);
        return Result.success();

        }

        @PatchMapping("/updatePwd")
    public Result updatePwd(@RequestBody Map<String,String> params,@RequestHeader("Authorization") String token){

//        1.校验参数
            String oldPwd = params.get("old_pwd");
            String newPwd = params.get("new_pwd");
            String rePwd = params.get("re_pwd");

            if(!StringUtils.hasLength(oldPwd) || !StringUtils.hasLength(newPwd) ||!StringUtils.hasLength(rePwd) ){
                return Result.error("请输入新密码或旧密码");

            }
            // 判断原密码是否输入正确
            // 再调用userService更新密码
            Map<String,Object> map = ThreadLocalUtil.get();
            String username = (String) map.get("username");
            User loginUser = userService.findByUserName(username);
            if(!loginUser.getPassword().equals(Md5Util.getMD5String(oldPwd))){
                return Result.error("旧密码错误");

            }

            // 判断newpwd和repwd输入是否一样
            if(!rePwd.equals(newPwd)){
                return Result.error("新密码和重复密码不一致");
            }

            // 调用service更新密码
            userService.updatePwd(newPwd);

            // 删除redis中对应的token
            ValueOperations<String,String> operations = stringRedisTemplate.opsForValue();
            operations.getOperations().delete(token);

            return Result.success();

        }

}
